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  2. Limit of a sequence - Wikipedia

    en.wikipedia.org/wiki/Limit_of_a_sequence

    The sequence given by the perimeters of regular n -sided polygons that circumscribe the unit circle has a limit equal to the perimeter of the circle, i.e. . The corresponding sequence for inscribed polygons has the same limit.

  3. TUN/TAP - Wikipedia

    en.wikipedia.org/wiki/TUN/TAP

    The Universal TUN/TAP Driver originated in 2000 as a merger of the corresponding drivers in Solaris, Linux and BSD. [1] The driver continues to be maintained as part of the Linux [2] and FreeBSD [3][4][5] kernels.

  4. p-adic number - Wikipedia

    en.wikipedia.org/wiki/P-adic_number

    The theory of p -adic numbers is fundamentally based on the two following lemmas: Every nonzero rational number can be written where v, m, and n are integers and neither m nor n is divisible by p. The exponent v is uniquely determined by the rational number and is called its p-adic valuation (this definition is a particular case of a more general definition, given below). The proof of the ...

  5. Fermat's theorem on sums of two squares - Wikipedia

    en.wikipedia.org/wiki/Fermat's_theorem_on_sums_of...

    In additive number theory, Fermat 's theorem on sums of two squares states that an odd prime p can be expressed as: with x and y integers, if and only if The prime numbers for which this is true are called Pythagorean primes. For example, the primes 5, 13, 17, 29, 37 and 41 are all congruent to 1 modulo 4, and they can be expressed as sums of two squares in the following ways: On the other ...

  6. Lim Han-byul - Wikipedia

    en.wikipedia.org/wiki/Lim_Han-byul

    Lim Han-byul[2] (Korean: 임한별; born 1989), [3] also known by the stage name Onestar, is a South Korean singer and songwriter. [4]

  7. Han Kang - Wikipedia

    en.wikipedia.org/wiki/Han_Kang

    Han Kang (Korean: 한강; born 27 November 1970 [1]) is a South Korean writer. From 2007 to 2018, she taught creative writing at the Seoul Institute of the Arts. [2] Han rose to international prominence for her novel The Vegetarian, which became the first Korean language novel to win the International Booker Prize for fiction in 2016. Kang is the first Asian woman and Korean to be a recipient ...

  8. Tap changer - Wikipedia

    en.wikipedia.org/wiki/Tap_changer

    On-load tap changer (OLTC), also known as On-circuit tap changer (OCTC), is a tap changer in applications where a supply interruption during a tap change is unacceptable, the transformer is often fitted with a more expensive and complex on-load tap changing mechanism. On-load tap changers may be generally classified as either mechanical, electronically assisted, or fully electronic. These ...

  9. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Such an appropriately sized drill is called a tap drill for that size of thread, because it is a correct drill to be followed by the tap. Many thread sizes have several possible tap drills, because they yield threads of varying thread depth between 50% and 100%.